NVIDIA GeForce RTX 5070 Mobile vs NVIDIA Rubin GPU Comparison

NVIDIA GeForce RTX 5070 Mobile and NVIDIA Rubin GPU occupy opposite ends of the GPU spectrum. The RTX 5070 Mobile is a laptop-oriented graphics processor built for the GeForce 50-series, while the Rubin GPU is a massive server accelerator designed for compute workloads. Benchmark data for the RTX 5070 Mobile shows a strong mid-range position, whereas the Rubin GPU has no recorded benchmark scores in the database. The specification sheets reveal fundamental differences in architecture, memory, power, and intended use cases. This analysis compares the two based on the recorded data.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the RTX 5070 Mobile and the Rubin GPU. The Rubin GPU has zero recorded benchmark entries, so no direct performance comparison is possible from the measured data. However, the RTX 5070 Mobile has a full set of benchmark results that place it in context against other GPUs.

The RTX 5070 Mobile achieves an average benchmark score of 29,928 across all recorded tests. This places it in the 75th percentile of all GPUs tracked in the database. Its closest rival is the NVIDIA GeForce RTX 3070 Ti with an average score of 29,945, a difference of only 0.1 percent in favor of the RTX 3070 Ti. The RTX 5070 Mobile also sits 0.5 percent ahead of the NVIDIA GeForce RTX 2080 Ti, which scores 29,783. Against AMD offerings, the RTX 5070 Mobile trails the Radeon RX 6800 by 0.6 percent (that GPU scores 30,095) and the Radeon RX 6700 by 1.7 percent (that GPU scores 30,433).

Looking at individual benchmark tests for the RTX 5070 Mobile, the strongest results come from Geekbench OpenCL with a score of 122,238 and Geekbench Vulkan with 116,960. PassMark G3D records 20,355 points, while PassMark G2D shows 896 points. Compute performance in PassMark GPU Compute reaches 8,279 points. Older DirectX tests show lower scores: PassMark DirectX 9 at 214, DirectX 11 at 192, DirectX 10 at 129, and DirectX 12 at 93. These numbers indicate that the RTX 5070 Mobile performs best in modern compute and graphics workloads rather than legacy DirectX paths.

The Rubin GPU, with no benchmarks, cannot be directly compared. Its percentile of 50 is a placeholder value, not a measured result. The database shows its average benchmark score as zero. Therefore, any head-to-head comparison relies entirely on specification differences rather than measured performance.

Architecture Differences

The RTX 5070 Mobile uses the GB206 chip based on the Blackwell 2.0 architecture, manufactured on a 5 nm process at TSMC. The die contains 21,900 million transistors across a 181 mm² area, giving a transistor density of 121.0 million per square millimeter. The Rubin GPU uses the GR100 chip based on the Rubin architecture, also fabricated by TSMC but on a 3 nm process. Its die measures 1,456 mm² and holds 336,000 million transistors, resulting in a density of 230.8 million per square millimeter. The Rubin GPU has over 15 times the transistor count and roughly 8 times the die area of the RTX 5070 Mobile.

Clock speeds differ substantially. The RTX 5070 Mobile runs at a base clock of 907 MHz with a boost clock of 1,425 MHz. The Rubin GPU has a lower base clock of 700 MHz but a much higher boost clock of 2,267 MHz. Memory clocks also diverge: the RTX 5070 Mobile uses 1,500 MHz with 24 Gbps effective bandwidth, while the Rubin GPU runs at 2,695 MHz with 10.8 Gbps effective.

Memory architecture shows the most dramatic split. The RTX 5070 Mobile has 8 GB of GDDR7 memory on a 128-bit bus, delivering 384.0 GB/s of bandwidth. The Rubin GPU carries 288 GB of HBM4 memory on a 16,384-bit bus, producing 22.1 TB/s of bandwidth. That is roughly 57 times more memory capacity and over 57 times more memory bandwidth for the Rubin GPU.

Compute resources favor the Rubin GPU overwhelmingly. The RTX 5070 Mobile has 4,608 shading units, 144 texture mapping units, 48 raster output units, 36 ray tracing cores, and 144 tensor cores. The Rubin GPU has 28,672 shading units, 896 texture mapping units, 24 raster output units, no listed ray tracing cores, and 896 tensor cores. The Rubin GPU has 6.2 times the shading units and 6.2 times the tensor cores of the RTX 5070 Mobile.

Rendering rates reflect the different balances. The RTX 5070 Mobile achieves 68.40 GPixel/s pixel rate and 205.2 GTexel/s texture rate. The Rubin GPU posts 54.41 GPixel/s pixel rate and 2,031.2 GTexel/s texture rate. The Rubin GPU has nearly 10 times the texture throughput but lower pixel throughput due to its small raster output count. Floating point performance shows a massive gap: the RTX 5070 Mobile delivers 13.13 TFLOPS FP32 and 13.13 TFLOPS FP16 (1:1 ratio). The Rubin GPU delivers 130.0 TFLOPS FP32 and 260.0 TFLOPS FP16 (2:1 ratio). The Rubin GPU is 9.9 times faster in FP32 and 19.8 times faster in FP16.

Power and physical design differ completely. The RTX 5070 Mobile has a TDP of 50 W, uses an integrated graphics processor form factor (IGP), has no power connectors, and no display outputs of its own (portable device dependent). The Rubin GPU has a TDP of 2,300 W, uses an SXM module slot, lists no power connectors, suggests a 2,700 W power supply, and has no display outputs. Bus interfaces also differ: the RTX 5070 Mobile uses PCIe 5.0 x16 while the Rubin GPU uses PCIe 6.0 x16.

API support separates the two. The RTX 5070 Mobile supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Rubin GPU lists N/A for all three APIs, indicating it is not designed for traditional graphics rendering.

Where Each One Wins

The RTX 5070 Mobile wins in scenarios requiring low power consumption, compact integration, and graphics API compatibility. Its 50 W TDP allows deployment in thin laptop chassis where the Rubin GPU's 2,300 W demand is impossible. The RTX 5070 Mobile supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, enabling standard gaming and graphics applications. Its 8 GB GDDR7 memory on a 128-bit bus suits mainstream laptop gaming at typical resolutions. The 1:1 FP16 to FP32 ratio indicates balanced compute for mixed workloads. The 75th percentile ranking confirms it sits above most GPUs in the database for overall benchmark performance.

The Rubin GPU wins in raw compute and memory bandwidth scenarios. Its 130.0 TFLOPS FP32 and 260.0 TFLOPS FP16 performance dwarfs the RTX 5070 Mobile, making it suitable for large-scale parallel processing. The 22.1 TB/s memory bandwidth and 288 GB HBM4 capacity enable handling massive datasets that would exceed the RTX 5070 Mobile's 8 GB pool. The 2:1 FP16 ratio suggests specialized tensor operations where half-precision throughput becomes critical. The 6.2 times more tensor cores and 6.2 times more shading units provide proportional scaling for compute-heavy tasks.

The RTX 5070 Mobile also wins on pixel fill rate, posting 68.40 GPixel/s versus the Rubin GPU's 54.41 GPixel/s. This indicates better performance in rasterization-bound work despite the Rubin GPU's overall compute advantage. The RTX 5070 Mobile has 48 raster output units compared to the Rubin GPU's 24, explaining this edge.

FAQ

Q: Which GPU has more memory bandwidth?

A: The Rubin GPU provides 22.1 TB/s of bandwidth from 288 GB of HBM4 memory on a 16,384-bit bus. The RTX 5070 Mobile provides 384.0 GB/s from 8 GB of GDDR7 memory on a 128-bit bus.

Q: What are the TDP requirements for each GPU?

A: The RTX 5070 Mobile has a TDP of 50 W and uses no power connectors. The Rubin GPU has a TDP of 2,300 W with a suggested power supply of 2,700 W.

Q: How do their FP32 compute performances compare?

A: The RTX 5070 Mobile delivers 13.13 TFLOPS FP32. The Rubin GPU delivers 130.0 TFLOPS FP32, which is approximately 9.9 times higher.

Q: Which GPU supports DirectX?

A: The RTX 5070 Mobile supports DirectX 12 Ultimate (12_2). The Rubin GPU lists DirectX as N/A, indicating no support.

Q: What process nodes are used?

A: The RTX 5070 Mobile uses a 5 nm process at TSMC. The Rubin GPU uses a 3 nm process at TSMC.

Q: How many shading units does each GPU have?

A: The RTX 5070 Mobile has 4,608 shading units. The Rubin GPU has 28,672 shading units.

Specification Differences

The two GPUs differ in nearly every recorded specification field. The RTX 5070 Mobile uses the GB206 chip in the Blackwell 2.0 architecture, while the Rubin GPU uses the GR100 chip in the Rubin architecture. Process nodes are 5 nm versus 3 nm, both from TSMC. Transistor counts are 21,900 million versus 336,000 million. Die sizes are 181 mm² versus 1,456 mm². Transistor densities are 121.0M per mm² versus 230.8M per mm².

Clock speeds differ across all fields: base clock 907 MHz versus 700 MHz, boost clock 1,425 MHz versus 2,267 MHz, memory clock 1,500 MHz versus 2,695 MHz, and effective memory speed 24 Gbps versus 10.8 Gbps. Memory capacity is 8 GB GDDR7 versus 288 GB HBM4. Bus widths are 128 bit versus 16,384 bit. Bandwidth is 384.0 GB/s versus 22.1 TB/s.

Compute unit counts differ: shading units 4,608 versus 28,672, texture mapping units 144 versus 896, raster output units 48 versus 24, ray tracing cores 36 versus not listed, tensor cores 144 versus 896. Pixel rates are 68.40 GPixel/s versus 54.41 GPixel/s. Texture rates are 205.2 GTexel/s versus 2,031.2 GTexel/s. FP32 performance is 13.13 TFLOPS versus 130.0 TFLOPS. FP16 performance is 13.13 TFLOPS versus 260.0 TFLOPS.

Power and physical specs differ: TDP 50 W versus 2,300 W, slot width IGP versus SXM Module, power connectors none versus not listed, suggested PSU not listed versus 2,700 W. Bus interfaces are PCIe 5.0 x16 versus PCIe 6.0 x16. Display outputs are portable device dependent versus no outputs. API support includes DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4 for the RTX 5070 Mobile, versus N/A for all three on the Rubin GPU.

Release dates differ: the RTX 5070 Mobile launched on 2025-04-14, while the Rubin GPU has a release date of 2025-12-31. The RTX 5070 Mobile has a predecessor of GeForce 40 Mobile, while the Rubin GPU has a predecessor of Server Blackwell. Neither has a successor listed.

The Verdict

The recorded data presents two GPUs with entirely different design goals. The RTX 5070 Mobile is a 50 W laptop processor with 8 GB GDDR7 memory, 13.13 TFLOPS FP32, and full graphics API support. Its benchmark results place it in the 75th percentile of all GPUs, with an average score of 29,928 that sits within 1.7 percent of its nearest rivals. It performs best in modern compute tests like Geekbench OpenCL and Vulkan, and it offers higher pixel fill rate than the Rubin GPU.

The Rubin GPU is a 2,300 W server accelerator with 288 GB HBM4 memory, 130.0 TFLOPS FP32, and 22.1 TB/s bandwidth. It has no benchmark scores in the database, so its performance must be inferred from specifications alone. Its massive compute resources, 6.2 times the shading units and 6.2 times the tensor cores of the RTX 5070 Mobile, indicate a focus on high-throughput parallel workloads rather than graphics rendering.

For laptop gaming and standard graphics applications, the RTX 5070 Mobile is the only viable option due to its power envelope, API support, and compact form factor. Its 50 W TDP and IGP slot width allow integration into portable systems. The Rubin GPU cannot be used in such configurations due to its 2,300 W power requirement and SXM module format.

For server compute tasks involving large datasets, the Rubin GPU is clearly superior based on memory capacity, bandwidth, and floating-point throughput. The 288 GB memory and 22.1 TB/s bandwidth exceed the RTX 5070 Mobile by orders of magnitude. The 260.0 TFLOPS FP16 performance indicates strong tensor operation capability.

The data does not support a direct performance comparison because the Rubin GPU lacks benchmark entries. Buyers must choose based on workload requirements: graphics and portability point to the RTX 5070 Mobile, while raw compute scale points to the Rubin GPU. The RTX 5070 Mobile's 75th percentile ranking confirms its competitive position against other GPUs in the database, while the Rubin GPU's specification sheet speaks to a different class of hardware entirely.